The invention discloses a
dyeing method of a cotton fabric. The
dyeing method comprises the following steps of 1, scouring the cotton fabric; 2,
dyeing, firstly, feeding a dye into a dye vat with a dyeing
promoter, i.e.,
anhydrous sodium sulphate, wherein the temperature of the dye vat is 40 to 60 DEG C, and bath ratio in the dye vat is 1:(10 to 15), then feeding the cotton fabric scoured in the step 1 into the dye vat, after performing keeping warm preservation for 10 to 30 minutes, increasing the dye liquor temperature in the dye vat to 80 to 100 DEG C, performing keeping warm preservation for 50 to 70 minutes, and turning the cotton fabric for 5 to 7 times; 3, reducing temperature, and washing; 4, performing spinnability
processing. The invention provides the dyeing method of the cotton fabric. The dyeing method is simple and relatively low in cost, contaminant is not generated, production can be performed without specific equipment, the cotton fabric produced by the method is low in light
color difference, and soft and fluffy in hand feeling, and the problems of color floating, color
fading, color
staining, neps, color fastness and the like are solved basically.